They are (books)对划线部分提问

They are (books)对划线部分提问 they are reading story books（对划线部分提问） They are black?对划线部分提问. They read books in the library.(对划线部分提问) those are my books.【对划线部分提问.划线部分是my books】 英语 英语 these are（ lily's）books 对划线部分提问 those books are mine 对划线部分提问：mine my video tapes are on the books?on the books 划线 对划线部分提问 They often go there with their books.(对划线部分提问)划线部分：their 1.They are (my) books.（对括弧部分提问） These books are ours .划线部分在ours,对划线部分提问 They are workers.(对划线部分workers提问)